3-8 doesn't seem to be MS LifeCam Cinema:
[ 2704.109836] usb 3-8: new full-speed USB device number 5 using xhci_hcd
[ 2704.264737] usb 3-8: New USB device found, idVendor=413c, idProduct=b07c,
bcdDevice= 0.00
[ 2704.264739] usb 3-8: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2704.264740] usb 3-8: Product: Dell USB-C to HDMI/DP
[ 2704.264741] usb 3-8: Manufacturer: Dell
[ 2704.264741] usb 3-8: SerialNumber: 11AD1D0A9CD53B0B0B2B0B00
[ 7734.499474] usb 3-8: USB disconnect, device number 5
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1888639
Title:
Microsoft LifeCam Cinema reports "device descriptor read/all, error
-71" on 20.04 with USB-C adaptor
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